U.S. patent number 11,029,908 [Application Number 16/553,196] was granted by the patent office on 2021-06-08 for head mounted display apparatus.
This patent grant is currently assigned to Himax Display, Inc.. The grantee listed for this patent is Himax Display, Inc.. Invention is credited to Wen-Hsu Chen, Kuan-Hsu Fan Chiang, Yuet-Wing Li, Chi-Wen Lin.
United States Patent |
11,029,908 |
Lin , et al. |
June 8, 2021 |
Head mounted display apparatus
Abstract
A head mounted display (HMD) apparatus is provided. The HMD
apparatus includes a first lens, a second lens, a first
micro-display disposed on the first lens, a second micro-display
disposed on the second lens, a first light source, a second light
source, and an eyeglass frame. A first side of the first
micro-display corresponding to a first rubbing alignment processing
direction and a first side of the second micro-display
corresponding to a second rubbing alignment processing direction
are symmetric with respect to a center line of the eyeglass frame
between the first lens and the second lens. A first incident light
emitted by the first light source is obliquely emitted from the
first side of the first micro-display toward the first
micro-display and a second incident light emitted by the second
light source is obliquely emitted from the first side of the second
micro-display toward the second micro-display.
Inventors: |
Lin; Chi-Wen (Tainan,
TW), Chen; Wen-Hsu (Tainan, TW), Li;
Yuet-Wing (Tainan, TW), Fan Chiang; Kuan-Hsu
(Tainan, TW) |
Applicant: |
Name |
City |
State |
Country |
Type |
Himax Display, Inc. |
Tainan |
N/A |
TW |
|
|
Assignee: |
Himax Display, Inc. (Tainan,
TW)
|
Family
ID: |
74681192 |
Appl.
No.: |
16/553,196 |
Filed: |
August 28, 2019 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20210064320 A1 |
Mar 4, 2021 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F
3/011 (20130101); G06F 3/1423 (20130101); G02B
27/0172 (20130101); G02B 2027/0129 (20130101); G02B
2027/0118 (20130101) |
Current International
Class: |
G06F
3/14 (20060101); G06F 3/01 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Sitta; Grant
Attorney, Agent or Firm: CKC & Partners Co., LLC
Claims
What is claimed is:
1. A head mounted display (HMD) apparatus, comprising: a first lens
and a second lens; a first micro-display disposed on the first
lens; a second micro-display disposed on the second lens; a first
light source for emitting a first incident light; a second light
source for emitting a second incident light; and an eyeglass frame
for carrying the first lens, the second lens, the first light
source, and the second light source; wherein the first
micro-display and the second micro-display are made by symmetric
manufacturing processes, such that a first rubbing alignment
processing direction of the first micro-display is symmetric to a
second rubbing alignment processing direction of the second
micro-display, such that a first side of the first micro-display
corresponding to the first rubbing alignment processing direction
and a first side of the second micro-display corresponding to the
second rubbing alignment processing direction are symmetric with
respect to a center line of the eyeglass frame between the first
lens and the second lens; wherein the first incident light emitted
by the first light source is obliquely emitted from the first side
of the first micro-display toward the first micro-display and the
second incident light emitted by the second light source is
obliquely emitted from the first side of the second micro-display
toward the second micro-display.
2. The HMD apparatus of claim 1, wherein a difference between the
first rubbing alignment processing direction of the first
micro-display and the second rubbing alignment processing direction
of the second micro-display are 180 degrees.
3. The HMD apparatus of claim 1, wherein a first disposed direction
of the first micro-display is the same as a second disposed
direction of the second micro-display.
4. A head mounted display (HMD) apparatus, comprising: a first lens
and a second lens; a first micro-display disposed on the first
lens; a second micro-display disposed on the second lens; a first
light source for emitting a first incident light; a second light
source for emitting a second incident light; and an eyeglass frame
for carrying the first lens, the second lens, the first light
source, and the second light source; wherein a first disposed
direction of the first micro-display is upside-down to a second
disposed direction of the second micro-display with respect to a
center line of the eyeglass frame between the first lens and the
second lens, such that a first side of the first micro-display
corresponding a first rubbing alignment processing direction and a
first side of the second micro-display corresponding a second
rubbing alignment processing direction are symmetric with respect
to the center line of the eyeglass frame between the first lens and
the second lens; wherein the first incident light emitted by the
first light source is obliquely emitted from the first side of the
first micro-display toward the first micro-display and the second
incident light emitted by the second light source is obliquely
emitted from the first side of the second micro-display toward the
second micro-display.
5. The HMD apparatus of claim 4, wherein a first data scanning
direction of the first micro-display is opposite to a second data
scanning direction of the second micro-display.
6. The HMD apparatus of claim 4, wherein the first rubbing
alignment processing direction of the first micro-display is same
as the second rubbing alignment processing direction of the second
micro-display.
7. A head mounted display (HMD) apparatus, comprising: a first lens
and a second lens; a first micro-display disposed on the first
lens; a second micro-display disposed on the second lens; a first
light source for emitting a first incident light; a second light
source for emitting a second incident light; and an eyeglass frame
for carrying the first lens and the second lens; wherein the first
micro-display and the second micro-display are made by same
manufacturing processes, such that a first rubbing alignment
processing direction of the first micro-display is same as a second
rubbing alignment processing direction of the second micro-display,
such that a first side of the first micro-display corresponding to
the first rubbing alignment processing direction and a second side
of the second micro-display corresponding to the second rubbing
alignment processing direction are symmetric with respect to a
center line of the eyeglass frame between the first lens and the
second lens; wherein the first incident light emitted by the first
light source is obliquely emitted from the first side of the first
micro-display toward the first micro-display and the second
incident light emitted by the second light source is obliquely
emitted from a first side of the second micro-display toward the
second micro-display, wherein the first side and the second side of
the second micro-display are opposite to each other.
8. The HMD apparatus of claim 7, wherein a first disposed direction
of the first micro-display is the same as a second disposed
direction of the second micro-display.
9. The HMD apparatus of claim 7, wherein the eyeglass frame is used
for carrying the first light source and the second light source,
wherein the second incident light emitted by the second light
source is guided through a light guide component, such that the
second incident light emitted by the second light source may be
obliquely emitted from the first side of the second micro-display
toward the second micro-display.
10. The HMD apparatus of claim 7, wherein the second light source
is disposed to be combined with the second micro-display, such that
the second incident light emitted by the second light source may be
obliquely emitted from the first side of the second micro-display
toward the second micro-display.
Description
BACKGROUND
Field of Invention
The present invention relates to a head mounted display (HMD)
apparatus. More particularly, the present invention relates to a
head mounted display (HMD) apparatus for improving an image quality
of the left eye and the right eye.
Description of Related Art
Head mounted display (HMD) is an optical display product which
places two identical micro-displays respectively in front of left
eye and right eye. The HMD further includes two light sources, one
light source is used for emitting an incident light toward one of
the micro-displays, and the other light source is used for emitting
an incident light toward the other of the micro-displays. However,
because two micro-displays are identical, and the incident lights
are obliquely incident, an image quality (such as brightness,
contrast, etc.) of the left eye and the right eye may be
inconsistent.
SUMMARY
The present invention provides a head mounted display (HMD)
apparatus including a first lens, a second lens, a first
micro-display disposed on the first lens, a second micro-display
disposed on the second lens, a first light source for emitting a
first incident light, a second light source for emitting a second
incident light, and an eyeglass frame for carrying the first lens,
the second lens, the first light source, and the second light
source. A first rubbing alignment processing direction of the first
micro-display is symmetric to a second rubbing alignment processing
direction of the second micro-display, such that a first side of
the first micro-display corresponding to the first rubbing
alignment processing direction and a first side of the second
micro-display corresponding to the second rubbing alignment
processing direction are symmetric with respect to a center line of
the eyeglass frame between the first lens and the second lens. The
first incident light emitted by the first light source is obliquely
emitted from the first side of the first micro-display toward the
first micro-display and the second incident light emitted by the
second light source is obliquely emitted from the first side of the
second micro-display toward the second micro-display.
In accordance with one or more embodiments of the invention, a
difference between the first rubbing alignment processing direction
of the first micro-display and the second rubbing alignment
processing direction of the second micro-display are 180
degrees.
In accordance with one or more embodiments of the invention, a
first disposed direction of the first micro-display is the same as
a second disposed direction of the second micro-display.
The present invention also provides a head mounted display (HMD)
apparatus including a first lens, a second lens, a first
micro-display disposed on the first lens, a second micro-display
disposed on the second lens, a first light source for emitting a
first incident light, a second light source for emitting a second
incident light, and an eyeglass frame for carrying the first lens,
the second lens, the first light source, and the second light
source. A first disposed direction of the first micro-display is
upside-down to a second disposed direction of the second
micro-display, such that a first side of the first micro-display
corresponding a first rubbing alignment processing direction and a
first side of the second micro-display corresponding a second
rubbing alignment processing direction are symmetric with respect
to a center line of the eyeglass frame between the first lens and
the second lens. The first incident light emitted by the first
light source is obliquely emitted from the first side of the first
micro-display toward the first micro-display and the second
incident light emitted by the second light source is obliquely
emitted from the first side of the second micro-display toward the
second micro-display.
In accordance with one or more embodiments of the invention, a
first data scanning direction of the first micro-display is
opposite to a second data scanning direction of the second
micro-display.
In accordance with one or more embodiments of the invention, the
first rubbing alignment processing direction of the first
micro-display is same as the second rubbing alignment processing
direction of the second micro-display.
The present invention further provides a head mounted display (HMD)
apparatus including a first lens, a second lens, a first
micro-display disposed on the first lens, a second micro-display
disposed on the second lens, a first light source for emitting a
first incident light, a second light source for emitting a second
incident light, and an eyeglass frame for carrying the first lens
and the second lens. A first rubbing alignment processing direction
of the first micro-display is same as a second rubbing alignment
processing direction of the second micro-display, such that a first
side of the first micro-display corresponding to the first rubbing
alignment processing direction and a second side of the second
micro-display corresponding to the second rubbing alignment
processing direction are symmetric with respect to a center line of
the eyeglass frame between the first lens and the second lens. The
first incident light emitted by the first light source is obliquely
emitted from the first side of the first micro-display toward the
first micro-display and the second incident light emitted by the
second light source is obliquely emitted from a first side of the
second micro-display toward the second micro-display, wherein the
first side and the second side of the second micro-display are
opposite to each other.
In accordance with one or more embodiments of the invention, a
first disposed direction of the first micro-display is the same as
a second disposed direction of the second micro-display.
In accordance with one or more embodiments of the invention, the
eyeglass frame is used for carrying the first light source and the
second light source, wherein the second incident light emitted by
the second light source is guided through a light guide component,
such that the incident light emitted by the second light source may
be obliquely emitted from the first side of the second
micro-display toward the second micro-display.
In accordance with one or more embodiments of the invention, the
second light source is disposed to be combined with the second
micro-display, such that the incident light emitted by the second
light source may be obliquely emitted from the first side of the
second micro-display toward the second micro-display.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention can be more fully understood by reading the following
detailed description of the embodiment, with reference made to the
accompanying drawings as follows:
FIG. 1 illustrates an exemplary head mounted display (HMD)
apparatus 100 to illustrate inconsistent image quality of the left
eye and the right eye.
FIG. 2 illustrates a head mounted display (HMD) apparatus according
to a first embodiment of the present invention.
FIG. 3 illustrates a head mounted display (HMD) apparatus according
to a second embodiment of the present invention.
FIG. 4 illustrates a head mounted display (HMD) apparatus according
to a third embodiment of the present invention.
DETAILED DESCRIPTION
Specific embodiments of the present invention are further described
in detail below with reference to the accompanying drawings,
however, the embodiments described are not intended to limit the
present invention and it is not intended for the description of
operation to limit the order of implementation. Moreover, any
device with equivalent functions that is produced from a structure
formed by a recombination of elements shall fall within the scope
of the present invention. Additionally, the drawings are only
illustrative and are not drawn to actual size. The using of
"first", "second", "third", etc. in the specification should be
understood for identify units or data described by the same
terminology, but are not referred to particular order or
sequence.
FIG. 1 illustrates an exemplary head mounted display (HMD)
apparatus 100 to illustrate inconsistent image quality of the left
eye and the right eye. The HMD apparatus 100 includes an eyeglass
frame 110, a left lens 111, a left light source 112, a left
micro-display 113, a right lens 116, a right light source 117, and
a right micro-display 118. The eyeglass frame 110 is used for
carrying the left lens 111, the right lens 116, the left light
source 112, and the right light source 117. The left micro-display
113 is disposed on the left lens 111 and the right micro-display
118 is disposed on the right lens 116. As shown in FIG. 1, a
disposed direction of the left micro-display 113 is the same as a
disposed direction of the right micro-display 118. As shown in FIG.
1, each of the left micro-display 113 and the right micro-display
118 further includes a flexible printed circuit (FPC) for conveying
signals.
The left micro-display 113 has a first side 113a and a second side
113b corresponding to a rubbing alignment processing direction of
the left micro-display 113, the right micro-display 118 has a first
side 118a and a second side 118b corresponding to a rubbing
alignment processing direction of the right micro-display 118.
Generally, the left micro-display 113 and the right micro-display
118 are substantially the same micro-displays which are made by the
same manufacture processes, thereby having the same rubbing
alignment processing directions. Therefore, the first side 113a of
the left micro-display 113 corresponds to the first side 118a of
the right micro-display 118, and the second side 113b of the left
micro-display 113 corresponds to the second side 118b of the right
micro-display 118.
As shown in FIG. 1, the left light source 112 obliquely emits an
incident light from the first side 113a of the left micro-display
113 toward the left micro-display 113, but the right light source
117 obliquely emits an incident light from the second side 118b of
the right micro-display 118 toward the right micro-display 118.
Specifically, two incident lights are respectively emitted from
different side of its corresponding micro-display, and thus an
image quality (such as brightness, contrast, etc.) of the left eye
and the right eye may be inconsistent.
FIG. 2 illustrates a head mounted display (HMD) apparatus 200
according to a first embodiment of the present invention. The HMD
apparatus 200 includes an eyeglass frame 210, a left lens 211, a
left light source 212, a left micro-display 213, a right lens 216,
a right light source 217, and a right micro-display 218. The
eyeglass frame 210 is used for carrying the left lens 211, the
right lens 216, the left light source 212, and the right light
source 217. The left micro-display 213 is disposed on the left lens
211 and the right micro-display 218 is disposed on the right lens
216. As shown in FIG. 2, a disposed direction of the left
micro-display 213 is the same as a disposed direction of the right
micro-display 218. As shown in FIG. 2, each of the left
micro-display 213 and the right micro-display 218 further includes
a flexible printed circuit (FPC) for conveying signals.
The left micro-display 213 has a first side 213a and a second side
213b corresponding to a rubbing alignment processing direction of
the left micro-display 213, the right micro-display 218 has a first
side 218a and a second side 218b corresponding to a rubbing
alignment processing direction of the right micro-display 218. In
the first embodiment of the present invention, the left
micro-display 213 and the right micro-display 218 are made by
different manufacture processes (i.e., symmetric manufacture
processes), such that the rubbing alignment processing direction of
the left micro-display 213 is symmetric to the rubbing alignment
processing direction of the right micro-display 218. For example, a
difference between the rubbing alignment processing direction of
the left micro-display 213 and the rubbing alignment processing
direction of the right micro-display 218 are substantially 180
degrees or approximately 180 degrees. Therefore, the first side
213a of the left micro-display 213 corresponds to the first side
218a of the right micro-display 218, and the second side 213b of
the left micro-display 213 corresponds to the second side 218b of
the right micro-display 218. Specifically, as shown in FIG. 2, the
first side 213a of the left micro-display 213 corresponding to the
rubbing alignment processing direction of the left micro-display
213 and the first side 218a of the right micro-display 218
corresponding to the rubbing alignment processing direction of the
right micro-display 218 are symmetric with respect to a center line
215 of the eyeglass frame 210 between the left lens 211 and the
right lens 216.
As shown in FIG. 2, the left light source 212 obliquely emits a
first incident light from the first side 213a of the left
micro-display 213 toward the left micro-display 213, and the right
light source 217 also obliquely emits a second incident light from
the first side 218a of the right micro-display 218 toward the right
micro-display 218. Specifically, the first incident light and the
second incident light are respectively emitted from same side of
its corresponding micro-display, and thus the image quality (such
as brightness, contrast, etc.) of the left eye and the right eye
may be improved and even consistent. It is worth mentioning that,
in the first embodiment of the present invention, the image quality
of the left eye and the right eye may be optimally improved, when
the difference between the rubbing alignment processing direction
of the left micro-display 213 and the rubbing alignment processing
direction of the right micro-display 218 are 180 degrees. However,
the present invention is not limited thereto, the image quality of
the left eye and the right eye may be also improved when the
difference between the rubbing alignment processing direction of
the left micro-display 213 and the rubbing alignment processing
direction of the right micro-display 218 are approximately 180
degrees.
FIG. 3 illustrates a head mounted display (HMD) apparatus 300
according to a second embodiment of the present invention. The HMD
apparatus 300 includes an eyeglass frame 310, a left lens 311, a
left light source 312, a left micro-display 313, a right lens 316,
a right light source 317, and a right micro-display 318. The
eyeglass frame 310 is used for carrying the left lens 311, the
right lens 316, the left light source 312, and the right light
source 317. The left micro-display 313 is disposed on the left lens
311 and the right micro-display 318 is disposed on the right lens
316. As shown in FIG. 3, each of the left micro-display 313 and the
right micro-display 318 further includes a flexible printed circuit
(FPC) for conveying signals.
The left micro-display 313 has a first side 313a and a second side
313b corresponding to a rubbing alignment processing direction of
the left micro-display 313, the right micro-display 318 has a first
side 318a and a second side 318b corresponding to a rubbing
alignment processing direction of the right micro-display 318. In
the second embodiment of the present invention, the left
micro-display 313 and the right micro-display 318 are substantially
the same micro-displays which are made by the same manufacture
processes, thereby having the same rubbing alignment processing
directions. Therefore, the first side 313a of the left
micro-display 313 corresponds to the first side 318a of the right
micro-display 318, and the second side 313b of the left
micro-display 313 corresponds to the second side 318b of the right
micro-display 318. Specifically, as shown in FIG. 3, the first side
313a of the left micro-display 313 corresponding to the rubbing
alignment processing direction of the left micro-display 313 and
the first side 318a of the right micro-display 318 corresponding to
the rubbing alignment processing direction of the right
micro-display 318 are symmetric with respect to a center line 315
of the eyeglass frame 310 between the left lens 311 and the right
lens 316.
As shown in FIG. 3, a disposed direction of the left micro-display
313 is upside-down to a disposed direction of the right
micro-display 318, and thus the left light source 312 obliquely
emits a first incident light from the first side 313a of the left
micro-display 313 toward the left micro-display 313, and the right
light source 317 also obliquely emits a second incident light from
the first side 318a of the right micro-display 318 toward the right
micro-display 318. Specifically, the first incident light and the
second incident light are respectively emitted from same side of
its corresponding micro-display, and thus the image quality (such
as brightness, contrast, etc.) of the left eye and the right eye
may be improved and even consistent. It is noted that, because the
disposed direction of the left micro-display 313 is upside-down to
the disposed direction of the right micro-display 318, a data
scanning direction of the left micro-display 313 needs to be
opposite to a data scanning direction of the right micro-display
318, such that the head mounted display (HMD) apparatus 300 may be
correctly displayed.
FIG. 4 illustrates a head mounted display (HMD) apparatus 400
according to a third embodiment of the present invention. The HMD
apparatus 400 includes an eyeglass frame 410, a left lens 411, a
left light source 412, a left micro-display 413, a right lens 416,
a right light source 417, and a right micro-display 418. The
eyeglass frame 410 is used for carrying the left lens 411 and the
right lens 416. The left micro-display 413 is disposed on the left
lens 411 and the right micro-display 418 is disposed on the right
lens 416. As shown in FIG. 4, a disposed direction of the left
micro-display 413 is the same as a disposed direction of the right
micro-display 418. As shown in FIG. 4, each of the left
micro-display 413 and the right micro-display 418 further includes
a flexible printed circuit (FPC) for conveying signals.
The left micro-display 413 has a first side 413a and a second side
413b corresponding to a rubbing alignment processing direction of
the left micro-display 413, the right micro-display 418 has a first
side 418a and a second side 418b corresponding to a rubbing
alignment processing direction of the right micro-display 418. In
the third embodiment of the present invention, the left
micro-display 413 and the right micro-display 418 are substantially
the same micro-displays which are made by the same manufacture
processes, thereby having the same rubbing alignment processing
directions. Therefore, the first side 413a of the left
micro-display 413 corresponds to the first side 418a of the right
micro-display 418, and the second side 413b of the left
micro-display 413 corresponds to the second side 418b of the right
micro-display 418. Specifically, as shown in FIG. 4, the first side
413a of the left micro-display 413 corresponding to the rubbing
alignment processing direction of the left micro-display 413 and
the second side 418b of the right micro-display 418 corresponding
to the rubbing alignment processing direction of the right
micro-display 418 are different sides and symmetric with respect to
a center line 415 of the eyeglass frame 410 between the left lens
411 and the right lens 416.
As shown in FIG. 4, the left light source 412 obliquely emits a
first incident light from the first side 413a of the left
micro-display 413 toward the left micro-display 413, and the right
light source 417 also obliquely emits a second incident light from
the first side 418a of the right micro-display 418 toward the right
micro-display 418. Specifically, the first incident light and the
second incident light are respectively emitted from same side of
its corresponding micro-display, and thus the image quality (such
as brightness, contrast, etc.) of the left eye and the right eye
may be improved and even consistent.
For example, the left light source 412 and the right light source
417 may be carried on the eyeglass frame 410, and the second
incident light emitted by the right light source 417 may be guided
through a light guide component (e.g., a light guide pipe, a light
guide plate, etc.), such that the second incident light emitted by
the right light source 417 may be obliquely emitted from the first
side 418a of the right micro-display 418 toward the right
micro-display 418.
For another example, the left light source 412 may be designed to
be directly disposed beside the first side 413a of the left
micro-display 413 (i.e., the left light source 412 is disposed to
be combined with the left micro-display 413), and the right light
source 417 may be designed to be directly disposed beside the first
side 418a of the right micro-display 418 (i.e., the right light
source 417 is disposed to be combined with the right micro-display
418), such that the second incident light emitted by the right
light source 417 may be obliquely emitted from the first side 418a
of the right micro-display 418 toward the right micro-display
418.
It is worth mentioning that, in the case that the left light source
is disposed to be combined with the left micro-display and the
right light source is disposed to be combined with the right
micro-display, any of the second embodiment and the third
embodiment may be modified accordingly, such that the left light
source 212/312 obliquely emits an incident light from the second
side 213b/313b of the left micro-display 213/313 toward the left
micro-display 213/313, and the right light source 217/317 also
obliquely emits an incident light from the second side 218b/318b of
the right micro-display 218/318 toward the right micro-display
218/318.
From the above description, several head mounted display (HMD)
apparatus of the present invention are designed, such that the
incident lights are emitted from the same sides of the
micro-displays, and thus the image quality (such as brightness,
contrast, etc.) of the left eye and the right eye may be improved
and even consistent.
Although the present invention has been described in considerable
detail with reference to certain embodiments thereof, other
embodiments are possible. Therefore, the spirit and scope of the
appended claims should not be limited to the description of the
embodiments contained herein. It will be apparent to those skilled
in the art that various modifications and variations can be made to
the structure of the present invention without departing from the
scope or spirit of the invention. In view of the foregoing, it is
intended that the present invention cover modifications and
variations of this invention provided they fall within the scope of
the following claims.
* * * * *